Why did William win the Battle of Hastings

LO: Able to use Primary Sources to justify which factor is the most important for explaining William the Conqueror's victory.

MUST:Know which factors explain William the Conqueror’s victory at Hastings in 1066.
SHOULD: Be able to explain each factor with the use of Primary Sources to support and develop a judgement.
COULD: Begin to form a supported judgement which looks at the limitations of factors.